Washington, D.C. ? By 2017, total health care spending will double to more than $4 trillion a year, accounting for one of every $5 the nation spends, the federal government projects.

The 6.7 percent annual increase in spending – nearly three times the rate of inflation- will be largely driven by higher prices and an increased demand for care, the Centers for Medicare and Medicaid Services said Monday. Other factors in the mix include a growing and aging population. The first wave of baby boomers become eligible for Medicare beginning in 2011.

In 2006, people and the government spent $2.1 trillion on health care, an average of $7,026 a person. In 2017, health spending will cost an estimated $13,101 a person.